| Marc Beltrame | Agribusiness Assn. of IA | Undecided | GA83 |
| Steven Schoenebaum | Agribusiness Assn. of IA | Undecided | GA83 |
| Larry Murphy | Allied Charities of Iowa, LLC | Undecided | GA83 |
| Brad Epperly | IA. Assn. of Electric Cooperatives | Undecided | GA83 |
| James West | IA. Assn. of Electric Cooperatives | Undecided | GA83 |
| Keith Luchtel | IA. Assn. of Electric Cooperatives | Undecided | GA83 |
| Paula Dierenfeld | IA. Assn. of Electric Cooperatives | Undecided | GA83 |
| Scott Sundstrom | IA. Assn. of Electric Cooperatives | Undecided | GA83 |
| Tim Coonan | IA. Assn. of Electric Cooperatives | Undecided | GA83 |
| Jerry Fitzgerald | IA. Corn Growers Assn.(ICG) | Undecided | GA83 |
| Maggie Smith-Fitzgerald | IA. Corn Growers Assn.(ICG) | Undecided | GA83 |
| Mark Joyce | IA. Corn Growers Assn.(ICG) | Undecided | GA83 |
| Amber Markham | IA. Farm Bureau Federation | Supporting | GA83 |
| Joe Johnson | IA. Farm Bureau Federation | Supporting | GA83 |
| Mark Salvador | IA. Farm Bureau Federation | Supporting | GA83 |
| Janice Laue | IA. Federation of Labor, AFL-CIO | Opposing | GA83 |
| Ken Sagar | IA. Federation of Labor, AFL-CIO | Opposing | GA83 |
| Laverne Schroeder | IA. Nebraska Farm Equipment Dealers Assn. | Undecided | GA83 |
| Jerry Fitzgerald | IA. Pork Producers Assn. (IPP) | Undecided | GA83 |
| Maggie Smith-Fitzgerald | IA. Pork Producers Assn. (IPP) | Undecided | GA83 |
| Mark Joyce | IA. Pork Producers Assn. (IPP) | Undecided | GA83 |
| Jill Altringer | IA. Poultry Assn. | Supporting | GA83 |
| Kevin Vinchattle | IA. Poultry Assn. | Supporting | GA83 |
| Mike Heller | IA. Retail Federation | Undecided | GA83 |
| Paula Feltner | IA. Retail Federation | Undecided | GA83 |
| Brad Epperly | IA. Society of Certified Public Accountants | Undecided | GA83 |
| James West | IA. Society of Certified Public Accountants | Undecided | GA83 |
| Keith Luchtel | IA. Society of Certified Public Accountants | Undecided | GA83 |
| Paula Dierenfeld | IA. Society of Certified Public Accountants | Undecided | GA83 |
| Scott Sundstrom | IA. Society of Certified Public Accountants | Undecided | GA83 |
| George Appleby | IA. State Bar Assn. | Undecided | GA83 |
| Jennifer Tyler | IA. State Bar Assn. | Undecided | GA83 |
| Jim Carney | IA. State Bar Assn. | Undecided | GA83 |
| Susan Cameron Daemen | IA. State Sheriffs' & Deputies' Assn. | Undecided | GA83 |
| Mike Heller | IA. Wholesale Beer Distributors Assn. | Undecided | GA83 |
| Paula Feltner | IA. Wholesale Beer Distributors Assn. | Undecided | GA83 |
| Marc Beltrame | M2P2, LLC | Undecided | GA83 |
| Michael Blaser | M2P2, LLC | Undecided | GA83 |
| Marc Beltrame | Smithfield Foods, Inc. | Undecided | GA83 |
| Steven Schoenebaum | Smithfield Foods, Inc. | Undecided | GA83 |